Questions, suggestions, revisions, and additions are encouraged.
Editing, updating and uploading continues on a daily
basis.

To reference the key:

Baker,
A.L. et al.2012.Phycokey -- an
image based key to Algae (PS Protista),
Cyanobacteria, and other aquatic objects. University of New Hampshire Center
for Freshwater Biology. http://cfb.unh.edu/phycokey/phycokey.htm